Abstract
Multiblock copolymers of ethylene oxide, with four and five different blocks, were synthesized by the sequential anionic polymerization of styrene, isoprene, 2-vinyl pyridine, t-butyl methacrylate, and ethylene oxide with benzyl potassium as an initiator. The monomer sequence was based on the relative nucleophilicity of the active centers. Characterization of the multiblock copolymers by size exclusion chromatography (with refractive-index and UV detectors), membrane osmometry, and NMR spectroscopy confirmed that benzyl potassium is an efficient initiator for the synthesis of well-defined multiblock multicomponent copolymers of ethylene oxide.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2166-2170 |
| Number of pages | 5 |
| Journal | Journal of Polymer Science, Part A: Polymer Chemistry |
| Volume | 40 |
| Issue number | 13 |
| DOIs | |
| State | Published - Jul 1 2002 |
| Externally published | Yes |
Keywords
- Anionic polymerization
- Benzyl potassium
- Membrane osmometry
- NMR
- Polystyrene-b-polyisoprene-b-poly(2-vinyl pyridine)-b-poly(ethylene oxide)
- Polystyrene-b-polyisoprene-b-poly(2-vinyl pyridine)-b-poly(t-butyl methacrylate)-b-poly(ethylene oxide)
- Size exclusion chromatography
ASJC Scopus subject areas
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry